PSLE 2009 - Science
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caroline3sg:
Any one can tell me your answer for the farmer spraying pesticides?
veg increase, fruit trees decreased ? -
justsay:
same answer... Hope it's correct...caroline3sg:
Any one can tell me your answer for the farmer spraying pesticides?
veg increase, fruit trees decreased ?
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hot_chocolate:
same answer... Hope it's correct...justsay:
[quote=\"caroline3sg\"]Any one can tell me your answer for the farmer spraying pesticides?
veg increase, fruit trees decreased ?[/quote]yup
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MummyJamie:
The Question is:
I think socaroline3sg:
mummyjamie & sahimi
my girl said biceps/triceps (is labelled as one letter) & the other one is the fulcrum - the elbow. So it is P & R?
The diagram shows a man exercising by raising a dumbell. Which of the following are needed for this action?
a) The biceps and the triceps
b) The elbow
c) The lower arm (bone)
My answer: All of the above.
Reason: The lower and upper arms are like levers. The elbow is the fulcrum, the muscles apply the effort and the lower arm is part of the lever. So, you need all three!
From: kohjl Jr
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kohjl:
The Question is:
I think soMummyJamie:
[quote=\"caroline3sg\"]mummyjamie & sahimi
my girl said biceps/triceps (is labelled as one letter) & the other one is the fulcrum - the elbow. So it is P & R?
The diagram shows a man exercising by raising a dumbell. Which of the following are needed for this action?
a) The biceps and the triceps
b) The elbow
c) The lower arm (bone)
My answer: All of the above.
Reason: The lower and upper arms are like levers. The elbow is the fulcrum, the muscles apply the effort and the lower arm is part of the lever. So, you need all three!
From: kohjl Jr :D[/quote] :!: Not only A*, I'm not surprised if you get full marks. Thanks for sharing !
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Yes fish bone and crab shell are bio degradable
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acelancer:
yup[/quote]The Question:
same answer... Hope it's correct...hot_chocolate:
[quote=\"justsay\"]
veg increase, fruit trees decreased ?
The farmer found that alot of caterpillars were eating his crops. The farmer sprayed alot of pesticides onto them. Which of the following is correct?
My answer:
Crops-increased
Fruits-increased
Reason: Even if the pesticides kill some of the plants, pesticides will kill most of the caterpillars. Since there are no more caterpillars feeding on the leaves, the number of crops will increase and therefore, the number of fruits will increase.
From: kohjl Jr
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kohjl:
wait, i think i changed it to ur ans. ah! i kei kiang again!The Question:
The farmer found that alot of caterpillars were eating his crops. The farmer sprayed alot of pesticides onto them. Which of the following is correct?
My answer:
Crops-increased
Fruits-increased
Reason: Even if the pesticides kill some of the plants, pesticides will kill most of the caterpillars. Since there are no more caterpillars feeding on the leaves, the number of crops will increase and therefore, the number of fruits will increase.
From: kohjl Jr -
Hello:
I put water and oxygen.What are the need(s) for a bread to turn mouldy?
(A)Oxygen
(B)Can't remember
(C)Water.
Its something like that.
From: kohjl Jr
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acelancer:
I put B and anther.
yup! i put tht too! at first i was stump by it.....Vaizard:
Hello, I am a candidate taking the PSLE.
What is the answer for the question about the flower wrapped with plastic bag? Is the answer B and anther? :shock:
From kohjl Jr
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